daytime: the exposure is off, unless you're going for the tonemapped HDR look. If you take a picture in reality - in order to properly expose the interior, the exterior will be overexposed.
Both:
1. the material on the wall behind the bed needs work. I would keep the diffuse big if you want that look, but tone down the bump/displace and increase the UVs on the bump/displace map. Right now it looks like a huge piece of tile. I think if you increase the bump UVs it will look more natural, like plaster.
2. The glazing on the window needs a frame or at least cut it into a channel in the granite, so it sticks out more. Check 'reflect on backside' on your glass material - it should be slightly reflecting the ceiling light and it might pickup a reflection from the pool light (like the granite).
3. The bedroom coffer has wood material on the sides and drywall on the bottom. The transition between the two is unrealistic. The living room coffer shows a 1x around the perimeter, which looks good.
4. Add a tree line at the horizon
5. slight z-blur for exterior
6. maybe add a little more gloss to the wood material
7. light noise bump map to wall material